Rheumatology, NMS-NOVA.
Department of Medicine, University of Illinois College of Medicine at Peoria and Bradley University, Peoria Illinois, USA.
Acta Reumatol Port. 2021 Apr-Jun;46(2):110-119.
The human resting myofascial tone maintains the body tone in a neutral posture, the assessment of this and other muscle physical properties (MPP) is relevant, since, it is altered in many pathological states.
Seventeen healthy subjects (8 males), between 18-50 years old, were assessed. The MPP of lower lumbar muscles was evaluated on right and left sides during prone resting position using two devices; myotonometry (stiffness, elasticity and tone) and ultrasound-based shear-wave elastography (SWE) (shear modulus). MTM measurements were performed at two anatomic points (ANp), selected by an experienced reader and at an adjacent ultra-sound determined point (USp). Myotonometry measurements of the erector spinae and SWE measurements of multifidus muscles at the L3-4 level were compared between genders and sides. The intra-reader reliability (IRR) for each device and correlations between techniques were analysed. MTM measurements performed at ANp and USp were compared. The intraclass correlation coefficient (ICC) was assessed for both devices. Correlations between stiffness (myotonometry) and shear modulus (SWE) at the respective muscle depths were assessed with Spearman correlation.
Males had greater stiffness and tone than females, particularly on the dominant side. MPP assessed by myotonometry were not different between ANp and USp. Good/Excellent IRR was documented for measurements by MTM (ICC≥0.90) and SWE (ICC≥0.85). No correlation in myotonometry stiffness and SWE shear modulus was found. For myotonometry assessments, the addition of ultrasonography was not different from anatomic localizations. No correlation of measurements was found between devices assessing respective L3-4 level muscles.
Gender and side differences must be considered when assessing MPP in axial muscles. For MTM assessments, the addition of ultrasonography was not different to anatomic references. No correlation was found between devices.
人体静息筋膜紧张度维持身体在中立姿势的体态，评估这种及其他肌肉物理特性（MPP）是相关的，因为在许多病理状态下，它会发生改变。
评估了 17 名健康受试者（8 名男性），年龄在 18-50 岁之间。在俯卧休息位时，使用两种设备评估下腰椎肌肉的 MPP；肌电描记术（僵硬、弹性和紧张度）和基于超声的剪切波弹性成像（SWE）（剪切模量）。MTM 测量在由有经验的读者选择的两个解剖点（ANp）和在相邻的超声确定点（USp）进行。对脊柱伸肌的肌电描记术测量和 L3-4 水平多裂肌的 SWE 测量结果在性别和侧别之间进行比较。分析了两种设备的内部读者可靠性（IRR）和技术之间的相关性。比较了在 ANp 和 USp 进行的 MTM 测量。评估了两种设备的组内相关系数（ICC）。评估了相应肌肉深度的肌电描记术（僵硬）和 SWE（剪切模量）之间的相关性。
男性的僵硬度和紧张度均高于女性，尤其是优势侧。通过肌电描记术评估的 MPP 在 ANp 和 USp 之间没有差异。通过 MTM（ICC≥0.90）和 SWE（ICC≥0.85）测量，记录了良好/优秀的 IRR。肌电描记术的僵硬度和 SWE 剪切模量之间没有相关性。对于肌电描记术评估，添加超声检查与解剖定位没有差异。评估各自 L3-4 水平肌肉的两种设备之间没有发现测量值的相关性。
在评估轴向肌肉的 MPP 时，必须考虑性别和侧别差异。对于 MTM 评估，添加超声检查与解剖参考没有差异。两种设备之间没有相关性。
